Re: [libvirt] [Qemu-devel] incorrect memory size inside vm
On Wed, Jun 17, 2015 at 6:33 PM, Vasiliy Tolstov <v.tolstov(a)selfip.ru> wrote:
2015-06-17 17:09 GMT+03:00 Andrey Korolyov <andrey(a)xdel.ru>:
> The rest of visible memory is eaten by reserved kernel areas, for us
> this was a main reason to switch to a hotplug a couple of years ago.
> You would not be able to scale a VM by an order of magnitude with
> regular balloon mechanism without mentioned impact, unfortunately.
> Igor Mammedov posted hotplug-related patches for 2.6.32 a while ago,
> though RHEL6 never adopted them by some reason.
Hmm.. Thanks for info, from what version of kernel memory hotplug works?
--
Vasiliy Tolstov,
e-mail: v.tolstov(a)selfip.ru
Currently QEMU memory hotplug should work with 3.8 and onwards.
Mentioned patches are an adaptation for an older frankenkernel of 3.8`
functionality.